The first thing you should do after configuring your system is change the default passwords. PELinux allows su as well as password-less sudo, so it's really quite important for, er, um, well, security reasons. I hate using the word "security" in the post-inside-job world but giving it some thought is required now-a-days.
pi@jessie-rpi:~$ su
Password: debian
root@jessie-rpi:/home/pi# passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
root@jessie-rpi:/home/pi# passwd pi
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
root@jessie-rpi:/home/pi# exit
exit
pi@jessie-rpi:~$
There's one more, the default keyring password is "pi", to change it go to:
Menu --> Accessories --> Passwords and Keys
Right click the default keyring and select "change password" from the pop-up menu.
It's also not a bad idea to create a non-admin user account if you intend to surf the dark webzes. If malicious web software hoses you just delete "surfer" (that's what I call mine) and his entire home directory. Much easier than restoring your last backup over and over again. ;)
